#include <iostream>
#include "head.hpp"
using namespace std;
int main()
{
  cout << 1 << '+' << 1 << '=' << *add(1, 1) << endl;
  cout << 2 << '-' << 1 << '=' << *sub(2, 1) << endl;
  cout << 2 << '*' << 1 << '=' << *mul(2, 1) << endl;
  cout << 2 << '/' << 1 << '=' << *div(2, 1) << endl;
  cout << 4 << '%' << 3 << '=' << *mod(4, 3) << endl;
  return 0;
}
